Assign TCP/IP Ports

By default, CAICCI uses the following port numbers:

If a port is not appropriate, you can use an alternative.

Important! If you use an alternative port, you must ensure that your firewall or TCP/IP configuration permits CAICCI to use that port.

To assign an alternative TCP/IP port, use one of the following methods:

Specify the port number in the CAICCI PROTOCOL statement, for example:
```
PROCOTOL(TCPIP,4500)
```
Specify the port number through the PARM parameter of the EXEC statement in the CAICCI TCP/IP server started task JCL member. For example, the following statement shows the specification in the CCITCP started task:
```
//CCITCP EXEC PGM=CAS9ATGS,PARM='PORT=4500',…
```
Specify the port number in your TCP/IP.ETC.SERVICES data set, for example:
```
caicci   4500/tcp
```
You can override this value using one of the two previous methods.